import org.xmlpull.v1.XmlPullParser;//包含解析XML文件類的包
import org.xmlpull.v1.XmlPullParserException;//處理異常
importorg.xmlpull.v1.XmlSerializer;//包含寫入XML文件類的包

<peopleinfo>
  <peopletag="item1">
    <id>1</id>
    <name>杜甫</name>
    <age>30</age>
    <height>1.75</height>
</people>
</peopleinfo>

XmlPullParser parser= getResources().getXml(R.xml.peopleinfo);

XmlSerializer serializer = Xml.newSerializer();
serializer.setOutput(writer);
//…
writer.flush()

package aaron.android.SQLiteDamon;
import java.io.IOException;
import java.io.Writer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;
import android.util.Log;
public class XmlPullHelper {
  private XmlPullParser parser;
  private XmlSerializer serializer;
  private ArrayList<Map<String, Object>> contents=new ArrayList<Map<String,Object>>();
  private Map<String,Object> map=null;
  public XmlPullHelper(XmlPullParser parser,XmlSerializer serial){
    this.parser=parser;
    this.serializer = serial;
  }
  /**
   * 將xml文件中的所有節(jié)點的數(shù)據(jù)解析后保存在一個ArrayList中返回
   * @param nodeName:數(shù)據(jù)項的名稱，這里為"people"
   * @param attr:數(shù)據(jù)項的屬性，如id，name,age,height
   * @return 解析該xml文件數(shù)據(jù)的結(jié)果
   * @throws XmlPullParserException
   * @throws IOException
   */
  public ArrayList<Map<String,Object>> xmlPull(String nodeName,String[] attr) throws XmlPullParserException, IOException{
    //循環(huán)讀取所有的元素
    while(parser.next()!=XmlPullParser.END_DOCUMENT){
      switch(parser.getEventType()){
        case XmlPullParser.START_DOCUMENT:
          break;
        case XmlPullParser.START_TAG:{  //元素開始標(biāo)識
          //判斷是否為所需要的數(shù)據(jù)項，如果是，在初始化一個map用于保存該數(shù)據(jù)項的值
          if(parser.getName()!=null&&parser.getName().equals(nodeName)){
            map=new HashMap<String, Object>();
            //循環(huán)讀取該元素中所有的屬性
            for(int j=0;j<parser.getAttributeCount();j++)
              map.put(parser.getAttributeName(j), parser.getAttributeValue(j));//添加屬性的值，如tag="item1"
          }
          else if(map!=null){
            for(int i=0;i<attr.length;i++){
              if(parser.getName()!=null&&parser.getName().equals(attr[i])){//添加子元素的值，如<name>張三</name>
                map.put(attr[i],parser.nextText());
              }
            }
          }
          break;
        }
        case XmlPullParser.END_TAG: {//元素結(jié)尾標(biāo)識
          //判斷是否為一個數(shù)據(jù)項的結(jié)束，如果是，將該數(shù)據(jù)項的數(shù)據(jù)添加到數(shù)據(jù)集contents中
          if(parser.getName().equals(nodeName)&&map!=null){
            contents.add(map);
            map=null;
          }
          break;
        }
      }
    }
    return contents;
  }
  /**
   * 將給定的數(shù)據(jù)集寫入XML文件
   * @param fileName: 根元素名，默認(rèn)設(shè)為跟文件名相同，如"peopleinfo"
   * @param nodeName: 數(shù)據(jù)項名 如"people"
   * @param attr: 數(shù)據(jù)項的屬性 如id，name,age,height
   * @param con: 待寫入的數(shù)據(jù)集
   * @throws XmlPullParserException
   * @throws IOException
   */
  public void xmlWrite(String fileName,String nodeName,String[] attr,ArrayList<Map<String,Object>> con) throws XmlPullParserException, IOException{
    serializer.startDocument("UTF-8", true);
    serializer.startTag(null, fileName);//開始根元素標(biāo)簽<peopleinfo>
    for(int i=0;i<con.size();i++)
    {
      //開始元素標(biāo)簽<people>
      serializer.startTag(null, nodeName);
      //標(biāo)簽people屬性
      serializer.attribute(null, "tag", "people"+i);
      //循環(huán)將子節(jié)點寫入元素id,name,age,height
      for(int j=0;j<attr.length;j++)
      {
        serializer.startTag(null, attr[j]);
        serializer.text(con.get(i).get(attr[j]).toString());
        serializer.endTag(null, attr[j]);
      }
      //結(jié)束標(biāo)簽</people>
      serializer.endTag(null, nodeName);
    }
    //結(jié)束標(biāo)簽</peopleinfo>
    serializer.endTag(null, fileName);
    //結(jié)束文檔標(biāo)記
    serializer.endDocument();
  }
}

//定義數(shù)據(jù)集對象contents用于保存從XML文件中讀取的數(shù)據(jù)
ArrayList<Map<String, Object>> contents = null;
//將數(shù)據(jù)寫入XML文件，并保存到SD卡中
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
    File sdCardDir = Environment.getExternalStorageDirectory();//獲取SDCard目錄
    File saveFile = new File(sdCardDir, "peopleinfo.xml");
    FileWriter w=new FileWriter(saveFile);
    XmlSerializer serializer = Xml.newSerializer();
    XmlPullHelper xHelper=new XmlPullHelper(null,serializer);
    //待寫入的子元素標(biāo)簽
    String []items={"id","name","age","height"};
    //將Writer對象傳遞給 serializer
    serializer.setOutput(w);
    xHelper.xmlWrite("peopleinfo", "people", items, contents);//調(diào)用寫入方法
    w.flush(); //將serializer中數(shù)據(jù)寫入文件
    w.close();
}
//讀XML文件，解析并保存在數(shù)據(jù)集contents
XmlPullParser parser = getResources().getXml(R.xml.peopleinfo);
XmlPullHelper xHelper=new XmlPullHelper(parser,null);
String []items={"id","name","age","height"};
try{
  contents=xHelper.xmlPull("people", items);//調(diào)用解析方法
}
catch(Exception e){
  Log.e("XmlPullParser",e.getMessage(),e);
}